Which pH represent a solution that releases 100 times less hydrogen ions than a pH of 9

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

Creating new things to solve problems and improve life depends on the close interaction of which two fields?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.